Antifriction side bearing.



E. S. WOODS z-A. A. WEIGEL.

A. G. WELCH, EXEGUTOB. 0F E. S. WOODS, DEGD.

ANTIFRIGTION SIDE BEARING. APPLIOTION FILED NOV. 8, 1912.

1,1 1 1,1 1 9. Patented sept. 22, 1914.

33 M79 ze 3/ W20 Edwwad; #WMM/@geb THE NURRIS PETERS Co., PHOTO-LITHO.. WASHINGTON. D. C,

i elevation of` our improved nnirnn earns PATENT orrier..

EDWIN S. WOODS AND ARNOLD A.

WEIGEL, O CHICAGO, ILLINOIS; SAID WEIGEL ASSIGNOR T SAID WOODS; .ALBERT `Gr, WELCH EXECUTOR 0F SAID WOODS, DE-

CEASED'.

ANTIFRICTION SIDE BEARING.

Specification of Letters Patent. Application led November S, 19.12.

Patented Sept. 22, 1914:. se1-iain'o.73o,127.

To all whom it may concern Be it lnownithat we, EDWIN S. VVooDs and ARNOLD A. lVnfenL, citizens of the United States, and residents of Chicago, in the county of Cook and State of Illinois, have invented certain new and useful 1mprovements in Antifrictiou Side Bearings; and we do hereby declare that the following a full, clear, and exact description thereof', reference being had to the accompanying drawings, and to the lettcrsof reference marled thereon, which form a part of this specification. y

This invention relates to improvements in side bearings for railway cars and the like and more particularly to improvements in antifriction side bearings which include rollingantifriction elements that are automatically returned by resilient means to a predetermined central or normal position, after they have been moved therefrom by the relative `movement of the parts between which they are interposed.`

AThe invention consists of the matters hereinafter described and more particularly pointed out in the appendedclaims y ln the drawings Figure 1 is a view representing a longitudinal central section through our improved side hearing. F 2 is a view representing a top plan of our `improved side bearing with the fixed cover plate of the case inclosing'the same broken away-intermediate its ends. Fig. 3 is an end side bearing. Fig. 4l is a view representing` a vertical transverse sectionthrough the side bea-ring in the plane indicated by the line M of Fig. 1. Fig. 5 is a view representing a vertical transverse section through our improved bearing in a plane indicated by the line 5-52of Fig. 1. i

Referring now to that embodiment of our invention illustrated in the drawings, indicates a casing which incloses and supports the moving parts of the bearing. The said casing may be attached either to the bodybolster of thecar or to the truck-bolster and.v

as shown herein, is attached to the body bolster. The casing is oblong and rectangular in horizontal section and has upright side walls 11, 11 and upright end walls 12, 12. It is open at top and bottom and is provided with horizontal flanges 13, 13 at one open side, in this case its top side, and preferably at its ends, for attachment to the bol-- ster with which it is connected.

14 indicates a fixed cover plate which, in the embodiment shown in the drawings, is attached to the top of the casing. Said cover plate extends over the flanges 13, 15%

`end parts of the fixed cover 14: are provided vvith suitable apertures to receive the bousi, 15. l y

16 indicates a wear-plate of hardened. metal adapted to bear against the rolling antifriction elements contained in the cas ing. Said wear-plate is carried by the fixed cover plate lll and is made, as shown, sep` aiate therefrom for purposes of renewal. rlhe cover-plate is provided within the cas ing on its inner face with longitudinally extending lateral flanges 17, 17 and transversely extending end flanges 1S, 18 which embrace the edges of the wear-plate 16, and the ends` 16a of the wear plate are beveled and the end flanges 1S, 18 are bent inwardly, in a familiar manner, to engage said beveled ends so as to support the wear-plate.

The open part of the casing opposite the fixed cover 14- isclosed by a movable cover plate 19. Said movable cover plate has at each side an upright longitudinally extending rib or flange 19EL provided with a longitudinally extending horizontal flange or shoulder 20 which is adapted for engagement with an inwardly extending longitudinal shoulder or track 21 on the side wall 11 of the casing. By this construction the movable cover plate is locked to the casing while, at the same time, it is capable of free longitudinal movement with respect thereto. The end walls 12, 12 of the casing are cut away in line with the upright flanges 19EL and the horizontal shoulders 20 of the movable cover plate to provide notches 19h, 20a through which said flanges and shoulders may pass in the movement of said cover plate, and the end walls of the casing intermediate the said flanges 19a terminate at a level above the inner face of said movable cover plate so that-they will not interfere with its movement.v The upright flanges 19a, 19 are provided with laterally extending lugs 22 spaced from the ends of the movable cover plate to limit the movement thereof within the casing, said lugs striking the end walls 12, 12 of the casing when the movable cover plate has reached the predetermined limits of its movement in either direction. It is apparent from the construction described that the movable cover plate may be pla-ced within the casing by inserting it through the open top thereof before the iixed cover plate 14 is placed in position, and that after it has been located within the casing it can not be withdrawn therefrom until the fixed cover plate 14 has been removed.

A wear-plate 23 is carried on the inner surface of the movable cover plate 19 just as in the case ofthe fixed cover plate, said movable cover plate being provided with upright end flanges 24, 24, for retaining said wear-plate in place,

An antifriction device is interposed between the two cover plates of the casing to provide bearing between them. Said antifriction device comprises a plurality of rolling antifriction elements and a movable car, riage in which they are inclosed, as followsz' 26, 27 indicate the antifriction elements of our improved side bearing, the same being interposed between the fixed cover-plate 14 and the removable cover-plate 18, and being.

arranged in two lines or rows, one at eachj` side of the medianv line of the casing. Said'i antifriction elements, as shown herein, are of the roller type. .They are contained in a movable carriage 28' which is interposed' loosely between the said cover-plates. Said carriage consists, as shown, of longitudinally? extending, laterally spaced, upright plates' 29, 29, connected together by a. horizontal, longitudinally extendingplate 30, placed between their upper and lower edges. Each plate 29 is provided with a series of laterally extending, longitudinally spaced bars 31,2` which deiine a plurality of compartments 33,

at the sidesof said carriage, for the antifric-l tion elements 2G, 27. The series of bars 31 on; each side of the carriage defining the said compartments are spaced a suiiicient disi tance apart to permit a limited free playy of each antifriction element in its compartment so that all of the antifriction elements may have a limited amount of play independently of the carriage. As a result the antifriction` elements are not always brought to rest at the same points on the wear-plate, their positions of rest being capable of variation equal to the amount of play permitted them by the carriage, so that undue wear of the wear` plate at any one point or points is avoided.v

The horizontal plate 30 of the carriage di- --vides the same into upper and lower longi-` f tudinally extending chambers -35 and 36.

The upper `chamber 35- 'isdivided' longitudinally by a transverse rib 37 into two 'com-` partments and opposing coiled springs 38, 39 are placed in said `compartments each with one end bearingagainstthe dividing transverse wall 37 and with the other end projecting beyond the carriage and bearing against the end walls 12, 12 of the casing. The latter are preferably provided with hooks or lugs 40 adapted for supporting engagement with the proximate ends of the springs with which they engage. It' is apparent that the movement of thecarriage in either direction will compress one or the other of the said springs 38, 39.

In the lower chamber 36 `of the carriageis placed an expansion coiled spring 41. The ends of said spring are engaged against upright lugs 42, 42, made rigid with the movable cover plate 18 and projecting up through suitable apertures in the wear-plate.

23 carried thereby. The ends of said spring are also adapted for engagement with inwardly extending shoulders 43, 43 on the ends of the upright plates 29, 29 of the carriage, said shoulders being spaced apart so that the carriage may be moved longitudinally of the casing without their striking the upright lugs 42, 42 'of the movable cover plate. Thus any movement of the movable coverplate 19 will tend `to compress' the spring 41 against the shoulders 43 at that end of the carriage toward which saidcoverplate is moving if the carriage remains stationary or movesat a less speed "than that of the cover-plate.

The operation` of our improved side bearing is as follows: Then-,in the travel of the car to which it is applied, as in going around curves, the truck bolstershifts horizontally with reference to the body bolster andthe car body tilts soas to cause the car body to approach the truck bolster, that bolster which is not attached to the casing, frictionally engages thexmovable cover-plate' 19 and causes it to move. longitudinally in the casing 10 toward oneor the other end thereof. This movement of the movable cover-plate imparts a rolling movement to the antifriction elements 26, 27, and-they in turn by engagement with the transversely extending v bars 31, impart a like movementto the carriage 28. As will berea'dily understood, the movement of the vantifriction elements and of the carriage is `only half as great as the movement of the movable cover. As `a result, the coiled spring 41 will be compressed between' one of the lugs 42 of the movable cover-plate at one end of the spring 41 and the shoulders43 at the opposite end of the carriage, andA thatvone of the coiled springs 38, located in theend of the casing Vtoward which the carriage istraveling, will be compressed between the transverse bar37 of the carriage .and the endwall 'of' the casing.

f springs 3S,

i0 Ito the casing, `to center the *under each line or stantially ofthe, same horizontal width as` 1,111,119 i 3 As shown, notches 12y are cut in the end Walls 12 of thevcasing for the lugs 12 to pass through in case the moved far the limits It will adapted to be inserted? through the `other opening thereof. 1 V i movable cover-plate is `2. Inaside bearing of the class described, enough to bring said lugs beyond a casing open at top and bottoni, 'a fixed of the casing. f l` A cover-plate at one open Side ofsaid casing be apparent that the opposing and a movablecover plate at; the other' open 39 act to center the` antifriction; device, comprising the carriage 28 and the:` antifriction elements 26,27, with reference" while the third spring al acts movable cover-plate 19 with fand aiitifriction means interposed between said cover plates. 8. In a side bearing of the class described,

reference to the carriage 28 and thus with casing open at top `and bottom, a fixed reference to the antifriction device, so that` cover plate on top of said casing, a movable cover plate for` the bottom of `adapted to be inserted through the open top thereof, means providing sliding bearing of said movable cover plate in said casing, and antifriction means interposed between said coverplates.` Y y v i a In a side bearing of the class described, 'a casing` cover plate on both the antifriction device and tliemovable cover-plate will be returned to' their normal positions when the pressure of the bolster against the movable cover is released, and the side bearing ceases'to vtransmit load.

rlhe bottom vsurface ofthe movable coverplate is provided with longitudinally extending` raised surfaces orribs 19X, 19X, one" rowof antrifriction eleribs,tas shown, are sub` vsaid casing,

e top of said casing, and a movable cover plate for the bottom of `said casing adapted to be inserted through the :open top thereof, said casing and said movable cover` plate beingprovided with interengaging parts for supporting said movable Vcover plate in slidingv relation withf said casing, and antifriction means interposed bements 26, 27. Said the antifriction rollers 26, 27, and act `to in-` sure the contact ofthe movable cover plate with the bolsterengaged by it in the vertical planes of the antifriction elements alone, thus obviating any bending strain on the 3o said cover-plate tending to crush the same tween said cover plates.

` along a median line, that is tosay, along the 5. In aside bearing of the class described, 4line where it is not supported `by the antia casing open at top and bottom and having friction elements. side and end walls, a fixed cover plate on top `It will be noted thattheantifriction de-` of said casing and a movable cover plate for vice holds the movable "cover-,plate inposithe bottom of said` casing adapted to be intion within the casingand acts to prevent serted through the `open top thereof,` the its Withdrawaltherefrom;` ,i 1 said walls of said casing being provided "The movable cover-plate is made some- `with longitudinally extending tracks with what shorter in length than the casing so as whichsa'id movable cover plate is adapted 40 to leave openings 12x at the ends of the casto engage, said cover plate being provided ing, vfor purposes of.` ventilation, as clearly with stops adapted to limit the withdrawal shown in Fig. 1. s of said cover plate from said casinglongi- While in describing our invention we tudinally in either direction, and antifrichave referred to the top and bottom side of tion means interposed between said cover thecasing, it is to beunderstood that these plates. 1

terms, `both in the description and in the 6. Ina side bearing of the class described, claims, are to be understood only as relative a casing, a fixed top cover plate therefor and terms, since apparentlyand as clearly pointa longitudinally movable bottom cover plate ed out in the beginning, the side bearing therefor, said casing being provided with may be attached to the truck-bolster instead Ventilating' openings at its ends, and anti- `of to the body-bolster, in which case that friction means interposed between said cover part of the casingcalled the top will be plates. placed below and that called the bottom will t 7. In a side bearing of the class described, be placed above., In addition, while in illusa casing open at top `and bottom, a fixed trating and describing one embodiment of cover plate on top of said casing, a movable ourinvention we have referred to certain cover plate for the bottom o said casing, details of mechanical construction and arsaid casing being provided with longitudirangement it is to be understood that the nally extending parallel tracks adapted for invention is in no way to be limited thereto supporting engagement with said movable except asmay be pointed out inthe appendcover plate and said movable cover plate tert ed claims. minating at its ends short of the ends of the We claim as our invention casing, providin ventilatino openings, and 1` In a side bearing of the class described1 antifiiction means interposed between said a casing open at top and bottom and a movcover plates.

able cover-plate for one `of said openings e 8. In a side bearing of the class described,

movement thereof in leither direction, an

an antifricticn device longitudinally mov-A able in said casing, opposing springsA acting 'oi' said antifriction device each side oi' the r`a lcarriage provided with longitudinally "12. In a side bearing fof the kind described, 'in combination' with Va casing, `a Vmovable cover-plate on the bottom of said casing, anl antifriction device longitudinally in `combination withacasing, a movable cover plate for the bottom of said casing, an antifriction :device longitudinally movable` in said casing, opposing resilient devices interposed between said antitriction device and the casing to resist the longitudinal a y carriage provided with longitudinally d; vspaced rows of compartments on either side [of theimedian line thereof and a plurality of antifriction elements, one in each of said compartments', opposingV located in a plane .between said rows of `compartnfients vadapted to resist the movean additional resilient vdevice interposed be-V tween saida-ntifriction deviceand said. movable cover plate adapted to opposethe longitudinal movement ot' said cover plate with reference to said antifriction device in either but in the same vertical plane lwith the said first two named resilient members adapted to resist` relative `movement between said movable cover plategand said carriage.

laliiianside `bearing .of the kindV described,

cover-plate for the bot-tom of said casing,

between lsaid casing and said `antifriction device to resist the `longitudinal movement in eitherl direction, and an additional spring located iin a different horizontal plane but in the same vertical plane with said .first two named springs, said additional spring being "adapted to resist relative longitudinal movement between said movable cover plate "a'nd said antifriction device in either direction.. l

l0. In a side bearing of the kind described, in combination with a casing, a movable cover-plate on the bottom 'of said casing, and an antifriction device longitudinally movable in said casing, said anti- :frictionV device comprising a carriagev and antifriction elements arranged in rows on median Vline of said f cari'iage, and said carriage having laterally extending, longitudinally spaced bars providing compartments one for each of. said antiiriction elements. i Y

1l. ln a sidebearing ofthe kind desci'ibedy in combination with a casing, a movable cover-plate on the bottom'of said casing, an antifriction device longitudinally movable in said casing and comprising yin combination w-ithl Va casing, a movable cover'plate having sliding bearing in said casing, acarriag'e longitudinally movable in saidfcasing,f antifriction elements arranged in rows `at either side ofthe me- *dian line ofvsaid carriage7 opposing springs bearing between a-fixed part of said :carriage and` the ends'o-the casing,an additional spring located belown-the planes` of the first twonamed springs, cover plate being,- provided with upright lugs adapted to engage against the ends of said third spring and said carriage being pass which .arefalso engaged against the ends of said additional spring. i

11i. ln aside bearing, a casing, awlongitudinally movable cover for said casing, a longitudinally movable carriageV in said casing, and an antifriction elementin said carriage, said antifriction element being capable of limited play :within the carriage.

In testimony, that we claim vthe `foregoing as ourinvention we affix our signaturesin the presence of two witnesses, this 25th day spaced rows of compartments on either side of October A. D. 1912. '1

of the median line thereof and a plurality EDVVIN S; WOODS, f f or' antifriction element-s, one in each of said y ARNOLD A. WEIGEL. compartments, said antifriction elements f Witnesses: having limited play within said compart- 7 T. H. ALrREDs,

ments. GEORGE R. WiLiriNs.

"Copies of this patent may be obtained for ve cents each, by addressing the Washington, D.` C.

Gommissioner of .gatexitl,

movable in said `casing and comprising resilient members Y direction. i i ment of said carriage in either7 direction in 9. In a side bearing of the kind described, said casing, and an additional resilient memin.y combination with a casing, a movable berloca-ted inl a differenthorizontal plane said i movable provided with laterally spaced lugsbetween which' said -irstfnamed lugs are adapted to i, 

